JOEL KOTKIN: America’s great migration: The young and ambitious are fleeing the stagnant coastal states for the booming heartland.

Travel across America and the differences between regions can seem almost like those between nation states. The elite classes – and their chattering-class interlocutors – remain concentrated in New York, Los Angeles and San Francisco, places that retain much of the world’s ultra-rich. Yet the supremacy of these cities is being undermined by their growing failure to offer working- and middle-class citizens, particularly the young, the prospect of a better life.

Over the past decade, economic and demographic momentum has accelerated towards Texas, Arizona, the Carolinas and Florida – places once dismissed as economically and culturally backward. None of America’s major growth hubs is now located in the north-east or California. The rising cities of today include Dallas-Fort Worth, Raleigh, Houston, Austin, Phoenix, Nashville and Salt Lake City.

Just don’t bring the Blue politics with you.